how do I know how many customers use jira 5.x and how many use 6.x ?

Question

is there a graph available?

Jobin Kuruvilla [Adaptavist] · Answer

I agree. Btw, Atlassian does track via google analytics but the customer can turn it off. I know many people have turned it off.

tommer · Answer

thanks, Jobin, but your logic also goes for browser statistics (versions and brands), and those do have graphs/tables (e.g. http://en.wikipedia.org/wiki/Usage_share_of_web_browsers)

Jobin Kuruvilla [Adaptavist] · Answer

I don't think so. It is impossible to track download JIRAs because people might use different versions for testing, might uninstall it etc. Not sure if Atlassian has this data gathered some other way but even if they have, I don't think it will be accurate.